4.如果这关系式成立的话,我们就会得到一个负 的电流,这种情况是不可能的。 5.色谱法( chromatography)是一种非常有效的 分离方法,它已得到了广泛的应用。 6.一块15m长的厚木板放在相距8m的两个支座上。 If this relation were to hold, we would get a negative current, an impossible situation A very effective separation method s chromatography is widely used a plant 15-meter-long is put on 2 supports 8 meters apart4. 如果这关系式成立的话，我们就会得到一个负 的电流，这种情况是不可能的。 5. 色谱法（chromatography）是一种非常有效的 分离方法，它已得到了广泛的应用。 6. 一块15m长的厚木板放在相距8m的两个支座上。 If this relation were to hold, we would get a negative current, an impossible situation. A very effective separation method, chromatography is widely used. A plant 15-meter-long is put on 2 supports 8 meters apart